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'2 Sheets Sheet 1.

(No Model.)

D. A.. DEGROW. PUMPING ENGINE.

` (No Model.) a. f 2 Sheets-Sheet 2:

D. ALDECROW.l PUMPING ENGINE.

No. 584,760. Patented June l5, 1897.

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/Vz'tnesses, lm/emor, 5? www 042mm PATENT FETCH..

DAVID A. DEOROVV, OF LOOKPORT, NEWv YORK, ASSIGNOR OF ONE-HALF TO THEHOLLY MANUFACTURING COMPANY, OF SAME PLACE.

PUVIPING-ENGINE.

SPECIFICATION forming part of Letters Patent No. 584,760, dated J une15, 1897..

Application tiled September 8, 1896. Serial No. 605,128. (No model.)

To all whom t may concern:

Be it known thatI, DAVID A. DECROW, a citizen of the United States,residing at Lockport, in the county of Niagara and State of New York,have invented a new and useful Improvement in Pumping-Engines, of whichthe following is a specification.

This invention relates to pumping engines, and particularly tohorizontal pumping-engines of the compound or Woolf type.

The object of the invention is to improve the construction of pumps ofthis class and to render the same more efficient in operation.

A further object of the invention is to provide an arrangement andconstruction where by the size of the pumpe-vlinder will not be limitedby the relative location and arrange-f and to the various views andreference-signs appearing thereon, Figure 1 is a view in centrallongitudinal section of a pumping-en* gine embodying the principles ofmy invention. Fig. 2 is a plan view of the same, showing my inventionapplied to two sets of engines arranged side by side and employing asingle crankshaft.

The same reference-sign is `employed to designate the same part Whereverit occurs throughout the several views.

Heretofore in pumping-engines of the class to which my invention relatesthe crankshaft and ily-wheel have been mounted on the pump. In suchconstructions and in or der to provide a sufficient amount of crank roomabove the pump-plungers it was necessary to limit the sizeof the pump inorder to provide a sufficient vertical distance between the center ofthe pump-cylinders and the center of the crank-shaft. Again, theconnect- .ing-rod from the main shaft has heretofore been attached tothe upper end of the workin g engine beam. Such constructionnecessitated the placing of the driving-motor at an objectionabledistance from the pump to be actuated thereby. Examples of enginesembodying these constructions are seen in Patents No. 263,694, datedSeptember 5, 1882, and No. 289,828, dated December 11, 1883, to Gaskill,and also in No. 455,868, dated July 14., 1891, to I-Iall, with whichpatents I am familiar.

In order to avoid the objections noted and to provide a constructionwherein the power of the drivingsteam-engine is most effect ivelyapplied to the Work of actuating the pump-plunger and to provide aconstruction wherein the driving steam-engine may be placed in as closeproximity to the pump as possible and a construction wherein the size ofthe pump will not be limited, I provide the following construction:

Reference -sign 10 designates a suitable frame mounted upon any suitablebase and having supported thereby or formed thereon the pillow-blocks23, in which is journaled Y the main crank shaft 21, upon which ismounted the fly-Wheel 20. Suitably mounted in the frame are thesteam-cylinders 1 1l, the one supported by the other. In the particularform shown, which I deem the preferable construction and arrangement,but to which I do not desire to be limited or restricted, thesteam-cylinders 1 and 11 are of the compound type, cylinder 11 being thehigh-pressu re cylinder and 1 the low-pressure cylinder, thehigh-pressure cylinder 11 eX- hausting into the low-pressure cylinder 1in the usual or well-known manner.

Reference-sign 2 designates the piston of the low-pressure cylinder 1. 3designates the pump-cylinder, arranged in alinement with thelow-pressure cylinder 1; 4, the pu iup-plunger; 5, the rod, which servesat the same time as the pump-rod and as the piston-rod of piston 2. 6designates the inlet-chamber of the pump, and? and 8 the pumpdischarge-chambers. Carried by rod 5 is a cross-head 9, arranged toslide in suitable guides formed in IOO the main frame 10. Upon the rod13 of piston 12 of the high-pressure cylinder 11 is mounted thecross-head 14, arranged to slide in the guides 15, formed in the frame10. In suitable bearings in frame 10 is mounted a shaft 17, upon whichrocks the working beam 16. rIhis beam is connected at one end throughlinks 1S to cross-head 14 and at its opposite end through links 19 tocross-head i). The crank 21 of the main crank-shaft is connected by aconnecting-rod 22 directly toA cross-head 14.

It will be observed from the foregoing description, taken in connectionwith the accompanying drawings, that the crank-shaft is arranged in theframe between the steamcylinders and the pump, thereby affordingsufficient space for the crank 21 without in any manner interfering withor limiting the size of the pump-cylinder, as in the case of the patentsabove mentioned, and it will also be seen that by connecting the crank21 directly with cross-head 14 instead of to the working beam, as hasheretofore been customary and as shown in the patents referred to, Ishorten the distance between the steamcylinders to the pump-cylinders inorder to compensate for the change in the location of the crank-shaftand in order to bring` the steam-cylinders in as close proximity to thepump-cylinder as may be possible. It will also be observed that byarranging the lowpressure cylinder and the pump-cylinder in alinementwith each other I am enabled to utilize the same piston-rod for both thesteamcylinder and pump, and hence the power of the steam-cylinder I ismore directly applied to the work of actuating the pump-plunger. It willalso be seen that the same frame which supports the steam-engine andpump contains the guides for the cross-heads as well as the bearings forthe beam-shaft and the crank-shaft.

Of course it will be observed that an engine embodying the principles ofmy invention may be employed and operated as a condensing-engine; but asthe air-pumps, condensers, and connections may be of the usual orordinary type and form no part of the present invention illustrationthereof has been omitted in the present application.

Many variations and alterations in the details of construction andarrangement, size and proportion of parts would readily suggestthemselves to persons skilled in the art and still fall within thespirit and scope of my invention. I do not desire, therefore, to belimited or restricted to the exact details shown and described; but,

I-Iaving now set forth the object and nature of my invention and a formof apparatus embodying the same and having described the construction,purpose, and mode of operation thereof, what I claim as new and usefuland of my own invention, and desire to secure by Letters Patent of theUnited States, is

1. In apumping-engine,aframework, a pair of steam-cylinders mountedthereon at one end thereof, a pump mounted on said frame at the oppositeend thereof and in alinement with one of said cylinders, a crank -shaftmounted on said frame and arranged between said pump and steam-cylindersa fly-wheel mounted on said shaft and direct connections between saidcrank-shaft and the piston-rod of one of said cylinders, as and for thepurpose set forth.

2. In apumping-engine,ahigh-pressure and a low-pressure steam-cylinder,a pump-cylinder arranged in alinement with one of said cylinders, asingle piston-rod common to both of said alined cylinders, a piston-rodfor the otherof said steam-cylinders, cross-heads carried by saidpiston-rods, connections between said cross-heads, a crank-shaftarranged between said pump-cylinder and said steam-cylinders andcarrying a fly-wheel, and a connecting-rod directly connected at therespective ends thereof to one of said cross-heads and to the 4crank ofsaid shaft, as and for the purpose set forth.

3. In a pumping-en gine, a pair of steam-cylinders, the one arrangedupon the other, a pump-cylinder, said pump-cylinder arranged inalinement with one of said steam-cylinders, a piston-rod for each ofsaid steam-cylinders, the rod for one of said cylinders also forming thepump-rod, a cross-head carried by each of said piston-rods, a workingbeam arranged between said steam-cylinders and said pump, connectionsbetween said working beam and said cross-heads, a crank-shaft, alsoarranged in said framework and between said steamcylinders and pump, afly-wheel mounted thereon, and a connecting-rod directly connected atthe respective ends thereof to the crank of said shaft and one of saidcrossheads; as and for the purpose set forth.

4. In a pumping-engine, a framework, a high-pressure and a low-pressuresteam-cylinder mounted therein, the one upon the other, a pump-cylinder,said pump-cylinder arranged in alinement with said low-pressurecylinder, piston-rods for each of said steam-cylinders, the piston-rodof said low-pressure cylinder also forming the pump rod, a cross headmounted on each of said piston-rods, a workin g beam connecting saidcross-heads,a crankshaft mounted in said framework and arranged betweensaid steam-cylinders and said pump, said shaft carrying a y-wheel, anddirect communications between the crank of said shaft and the cross-headof said highpressure cylinder; as and for the purpose set forth.

5. The combination of a low-pressure cylinder, the high-pressurecylinder mounted thereon, the pump in line with the low-pressurecylinder, the crank and fiy-wheel mounted on the frame between the pumpand steamcylinders and the working beam and direct connections betweenthe crank of said shaft and the cross-head of said high-pressurecylinder; substantially as described.

IOO

6. In a pumping-engine, a framework, a

'arranged to operate in said guides, and connected respectively to saidpistonrods, a working,` beam supported in said framework, linkspivotally connecting the respective ends thereof to said cross -headsrespectively, a

crank-shaft mounted in said framework arranged intermediate saidsteam-cylinders and pump and carrying' a fly-wheel and directcommunications between the crank of said shaft and one of saidcross-heads; as and for the purpose set forth.

In witness whereof I'have hereunto set my zo hand this lst day ofSeptember, 1896.

DAVID A. DECROV.

Attest:

STERLING H. BUNNELL, WILFRED P. DAvIsoN.

